import auth from '@/plugins/auth'
import router, {constantRoutes, dynamicRoutes} from '@/router'
import {getRouters} from '@/api/menu'
import Layout from '@/layout/index'
import ParentView from '@/components/ParentView'
import InnerLink from '@/layout/components/InnerLink'
import menulist from '@/utils/menu.js'

const permission = {
  state: {
    routes: [],
    addRoutes: [],
    defaultRoutes: [],
    topbarRouters: [],
    sidebarRouters: []
  },
  mutations: {
    SET_ROUTES: (state, routes) => {
      state.addRoutes = routes
      state.routes = constantRoutes.concat(routes)
    },
    SET_DEFAULT_ROUTES: (state, routes) => {
      state.defaultRoutes = constantRoutes.concat(routes)
    },
    SET_TOPBAR_ROUTES: (state, routes) => {
      state.topbarRouters = routes
    },
    SET_SIDEBAR_ROUTERS: (state, routes) => {
      state.sidebarRouters = routes
    },
  },
  actions: {
    // 生成路由
    GenerateRoutes({commit}) {
      return new Promise(resolve => {
        // 向后端请求路由数据
        let power_ = []
        let user_ = window.localStorage.getItem('userDoc') ? JSON.parse(window.localStorage.getItem('userDoc')) : ''
        if (window.localStorage.getItem('userRole')) {
          power_ = JSON.parse(window.localStorage.getItem('userRole')) || []
        }
        let list_ = []
        if (user_.id === 1) {
          for (let item of menulist.meaulist) {
            let meta_ = {
              hidden: false,
              component: 'Layout',
              children: []
            }
            if (!item.children) {
              meta_.path = '/'
              meta_.children.push({
                component: item.url,
                hidden: false,
                meta: {title: item.label, icon: item.icon, noCache: false, link: null},
                name: item.name,
                path: item.name
              })
            }
            if (item.children && item.children.length) {
              meta_.alwaysShow = false
              meta_.name = item.label
              meta_.path = item.url
              meta_.redirect = 'noRedirect'
              meta_.meta = {title: item.label, icon: item.icon, noCache: false, link: null}
              let child_list = []
              for (let child_ of item.children) {
                let line_ = {
                  alwaysShow: false,
                  component: child_.url,
                  hidden: false,
                  meta: {title: child_.label, icon: null, noCache: false, link: null},
                  name: child_.label,
                  path: child_.name,
                  children: []
                }
                if (child_.children) {
                  line_.redirect = "noRedirect"
                  line_.component = "ParentView"
                  let lastChildren = []
                  for (let last_ of child_.children) {
                    if (power_.indexOf(last_.id) !== -1 || user_.id === 1) {
                      lastChildren.push({
                        component: last_.url,
                        hidden: false,
                        meta: {title: last_.label, icon: null, noCache: false, link: null},
                        name: last_.label,
                        path: last_.name
                      })
                    }
                  }
                  line_.children = lastChildren
                }
                child_list.push(line_)
                meta_.children = child_list
              }
              if(item.url == '/system'){
                meta_.children.push({
                  component: 'admin/systemSetting/log',
                  hidden: false,
                  meta: {title: '操作日志', icon: null, noCache: false, link: null},
                  name: '操作日志',
                  path: 'systemLog'
                })
              }
            }
            list_.push(meta_)
          }
        } else {
          // 第一导航
          for (let item of menulist.meaulist) {
            let meta_ = {
              hidden: false,
              component: 'Layout',
              children: []
            }
            if (!item.children) {
              meta_.path = '/'
              meta_.children.push({
                component: item.url,
                hidden: false,
                meta: {title: item.label, icon: item.icon, noCache: false, link: null},
                name: item.name,
                path: item.name
              })
              if (power_.indexOf(item.id) !== -1) {
                list_.push(meta_)
              }
            }
            if (item.children && item.children.length) {
              meta_.alwaysShow = false
              meta_.name = item.label
              meta_.path = item.url
              meta_.redirect = 'noRedirect'
              meta_.meta = {title: item.label, icon: item.icon, noCache: false, link: null}
              let child_list = []
              // 第二导航栏
              for (let child_ of item.children) {
                let line_ = {
                  alwaysShow: false,
                  component: child_.url,
                  hidden: false,
                  meta: {title: child_.label, icon: null, noCache: false, link: null},
                  name: child_.label,
                  path: child_.name,
                  children: []
                }
                if (child_.children) {
                  line_.redirect = "noRedirect"
                  line_.component = "ParentView"
                  let lastChildren = []
                  // 第三导航栏
                  for (let last_ of child_.children) {
                    if (power_.indexOf(last_.id) !== -1) {
                      lastChildren.push({
                        component: last_.url,
                        hidden: false,
                        meta: {title: last_.label, icon: null, noCache: false, link: null},
                        name: last_.label,
                        path: last_.name
                      })
                    }
                  }
                  line_.children = lastChildren
                  if (line_.children.length) {
                    child_list.push(line_)
                  }
                } else {
                  if (power_.indexOf(child_.id) !== -1) {
                    child_list.push(line_)
                  }
                }
                meta_.children = child_list
              }
              if (power_.indexOf(item.id) !== -1 || meta_.children.length) {
                list_.push(meta_)
              }
            }
          }
        }
        // const sdata = JSON.parse(JSON.stringify(res.data))
        // const rdata = JSON.parse(JSON.stringify(res.data))
        const sdata = JSON.parse(JSON.stringify(list_))
        const rdata = JSON.parse(JSON.stringify(list_))
        const sidebarRoutes = filterAsyncRouter(sdata)
        const rewriteRoutes = filterAsyncRouter(rdata, false, true)
        const asyncRoutes = filterDynamicRoutes(dynamicRoutes);
        rewriteRoutes.push({path: '*', redirect: '/404', hidden: true})
        router.addRoutes(asyncRoutes);
        commit('SET_ROUTES', rewriteRoutes)
        commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(sidebarRoutes))
        commit('SET_DEFAULT_ROUTES', sidebarRoutes)
        commit('SET_TOPBAR_ROUTES', sidebarRoutes)
        resolve(rewriteRoutes)
        // })
      })
    }
  }
}

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
  return asyncRouterMap.filter(route => {
    if (type && route.children) {
      route.children = filterChildren(route.children)
    }
    if (route.component) {
      // Layout ParentView 组件特殊处理
      if (route.component === 'Layout') {
        route.component = Layout
      } else if (route.component === 'ParentView') {
        route.component = ParentView
      } else if (route.component === 'InnerLink') {
        route.component = InnerLink
      } else {
        route.component = loadView(route.component)
      }
    }
    if (route.children != null && route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children, route, type)
    } else {
      delete route['children']
      delete route['redirect']
    }
    return true
  })
}

function filterChildren(childrenMap, lastRouter = false) {
  var children = []
  childrenMap.forEach((el, index) => {
    if (el.children && el.children.length) {
      if (el.component === 'ParentView' && !lastRouter) {
        el.children.forEach(c => {
          c.path = el.path + '/' + c.path
          if (c.children && c.children.length) {
            children = children.concat(filterChildren(c.children, c))
            return
          }
          children.push(c)
        })
        return
      }
    }
    if (lastRouter) {
      el.path = lastRouter.path + '/' + el.path
    }
    children = children.concat(el)
  })
  return children
}

// 动态路由遍历，验证是否具备权限
export function filterDynamicRoutes(routes) {
  const res = []
  routes.forEach(route => {
    if (route.permissions) {
      if (auth.hasPermiOr(route.permissions)) {
        res.push(route)
      }
    } else if (route.roles) {
      if (auth.hasRoleOr(route.roles)) {
        res.push(route)
      }
    }
  })
  return res
}

export const loadView = (view) => {
  if (process.env.NODE_ENV === 'development') {
    return (resolve) => require([`@/views/${view}`], resolve)
  } else {
    // 使用 import 实现生产环境的路由懒加载
    return () => import(`@/views/${view}`)
  }
}

export default permission
